3480721 has 8 divisors (see below), whose sum is σ = 3622784. Its totient is φ = 3341520.

The previous prime is 3480703. The next prime is 3480727. The reversal of 3480721 is 1270843.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3480721 - 2¹⁷ = 3349649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3480727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1960 + ... + 3286.

It is an arithmetic number, because the mean of its divisors is an integer number (452848).

Almost surely, 2^3480721 is an apocalyptic number.

It is an amenable number.

3480721 is a deficient number, since it is larger than the sum of its proper divisors (142063).

3480721 is a wasteful number, since it uses less digits than its factorization.

3480721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 3480721 is about 1865.6690488937. The cubic root of 3480721 is about 151.5501618397.

The spelling of 3480721 in words is "three million, four hundred eighty thousand, seven hundred twenty-one".